Carbureter or mixing-valve for explosive-engines.



Patented Dec. 3|, I90l. A. L. KULL. GARBUBETER 0R MIXING VALVE FOR EXPLOSIVE ENGINES.

(Application filed Mar. 20, 1901.]

(No Model.)

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UNlTlED STATES PATENT OFFICE.

ALBERT L. KULL, OF CAMDEN, NEV JERSEY.

CARBURETER OR MIXING-VALVE FOR EXPLOSlVE-ENGINES.

SPEOIFIGATION formingpart of Letters Patent No. 690,112, d t d D b 31, 1901.

Application filed March 20, 1901. Serial No- 51,982. (Ilomodel-J T0 ctZZ whom, it may concern.-

Be it known that I, ALBERT L. KULL, a citizen of the United States, residing at Camden, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Carbureters or Mixing- Valves for Explosive-Engines, of which the following is a specification.

My invention has relation to a vapor and air mixing valve for gasolene and other explosive engines, and in such connection it relates to the construction and arrangement of such a valve.

The principal object of my invention is to provide a simple and efficient carbureter or mixing-valve adapted to thoroughly vaporize the hydrocarbon and to intimately mix the vapor thus obtained with air at each suction stroke or action of the piston of the explosiveengine.

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in which- Figure 1 is a vertical sectional view of a carbureter or mixing-valve embodying main features of my invention. Fig. 2 is an enlarged cross-sectional view taken on the line 2 2 of Fig 1. Fig. 3 is a cross-sectional view taken on the line 3 3 of Fig. 1, and Fig. a is an enlarged front elevational view of Fig. 1.

Referring to the drawings, a represents a shell or casing having at one end a chamber a for the entrance of air and at the opposite end the oil or hydrocarbon feed or supply. The upper portion a of the shell Cb is perforated at right angles to the chamber a, and the opening thus formed has an inverted conical wall a in which is cut or otherwise formed an annular groove or chamber 1), preferably semicircular in cross-section. The exterior of the upper portion a of the casinga is screw-threaded, as at a to receive the screw-threaded end of a cup-shaped tubular extension a forming in its interior the mixing-chamber a of the valve or carbureter. The upper open end a of the extension a is connected in any suitable manner (not shown) with the cylinder of an engine of explosive type. Upon the conical wall a of the shell a is arranged a complementally-formed dish or basin shaped ring or bushing 0, having its walls provided with a series of relatively minute perforations 0, arranged radially and inclined upward, so as to provide on the external face of the bushing c a number of ducts communicating with the annular groove or chamberb. Theringorbushingchasaflange 0 adapted to be clamped down upon the upper portion a of the casing a when the extension a is screwed down upon said casing. For this purpose the interior of the extension (1 is preferably provided with a series of ledges a adapted to bear upon the flange c of the bushingc when the extension a is in position upon the casing. The bushing 0 forms the seat proper for an inverted conical-shaped valve (1, the stem cl of which is guided in the yokes d and d suitably arranged, respectively, in the extension a and in the upper portion a of the casing a. A spring d, coiled around the stem at and interposed between the valve (Z and the yoke (1 serves to normally force the valve (:1 down upon its seat, and yet is not of sufficient tension to prevent the valve d from lifting upon the exhaust of the contents of the mixing-chamber a. The groove 1) is fed with oil or hydrocarbon, which passes through a duct 6 into the groove Z). The inlet to this duct 6 is controlled by a needlevalve f, which when retracted or advanced in the casing or shell 0t regulates the entrance of oil or hydrocarbon entering the duct 0 from a pipe 6', leading from a suitable source of oil-supply. (Not shown.) The stem f of the needle-valve f extends beyond the casing a and is provided with a notched disk f on the face of which is formed a dial. A spring-arm f extending from the casing a, is provided with a pawl f", adapted to enter the teeth of the dial-disk f to prevent its accidental turning.

The arrangement above described insures a complete vaporization of the oil or hydrocarbon as well as a thorough admixture of the vapor with air prior to the discharge of the mixture to the explosion-chamber of the engine. The oil in the channel 1) remainsinert until it is drawn in minute quantities through perforations 0, when the valve (1 is lifted and the air from the chamber a is forced between the inclined surfaces of the bushing c and valve d in intimate vrelationship with the fine jets of oil or vapor escap ing through the perforations 0 before the air can reach the mixing-chamber a A com plete and thorough admixture of air and vapor is thus secured at the point of entrance to the mixing-chamber a", and hence no drops of oil can collect in the base of said chamber a or in the air-inlet. If an excess of oil is present, it flows back into the groove 1) through the perforations c, and only that which is drawn out of said perforations c by the exhaust in the chamber a is permitted to mix with the inrushing stream of air. The air as its enters is forced into an annular sheet, and the vapor discharged from the orifices of the perforations c penetrates this annular sheet at points distributed around its entire periphery. If for any reason the perforations o of the bushing 0 become clogged or stopped by extraneous matter, it is a simple matter to remove the cup-shaped extension a and to take out the bushing o and cleanse the same.

Having thus described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a device of the character described, a casing or shell separable into two parts or seems leading upwardly and radially from the oilchamber to the inner inclined face of the bushing, and a conical valve supported within both members of the casingand seating upon the inner face of said bushing to .control not only the inlet. of air to said inner face, but the exit of oil over said face from said radial perforations.

In testimony whereof I have hereunto set my signature in the presence of two subscribing witnesses.

' ALBERT L. KULL.

\Vitnesse's J. WALTER DoUeLAss,

THOMAS M. SMITH. 

